A new species of Hebrus (Hemiptera: Heteroptera: Hebridae) from Argentina Author Stella, César Adrián Author Pall, José Luis text Zootaxa 2018 2018-08-09 4457 3 474 480 journal article 29051 10.11646/zootaxa.4457.3.9 27bc3ce6-b070-40ca-a349-0e5d57558f40 1175-5326 1457965 48BF402D-D026-4D5F-9A44-2A33BD56F114 Key to the species of Hebridae from Argentina (Modified from Konopko et al . 2009 ) 1- Antenna with segments robust and thick ( Fig.7 ); segment IV subequal in length to segment I.......... Merragata hebroides - Antenna with segments slender; segment IV longer than segment I ( Figs. 4 , 8 )..................................... 2 2- Antennal segment IV without constriction ( Fig. 8 ); male with a subapical spine on the posterior surface of the hind tibia..................................................................................... Lipogomphus lacuniferus - Antennal IV segment with a constriction in the middle (false membranous articulation), so that the antenna appears to possess five segments ( Fig. 4 ); male lacking a subapical spine on the posterior surface of the hind tibia ( Hebrus )................ 3 3- Body length approximately 3.00 mm; bucculae brownish, ventrally straight and subsequently slightly concave; clavus marked on each side with a small, basal, whitish spot adjacent to metanotal elevation and without pale spots on the membrane ( Fig. 9 ). Metanotal elevation with lateral and hind margins carinate, with prominent median carina sharply obliquely narrowed on sides along apical two-fifths..................................................................... Hebrus engaeus - Body length between 1.84 and 1.95 mm ; bucculae yellowish, ventrally curved, posteriorly conical and slightly elevated; clavus with a pearl-white marking from the base until almost to the apex of the metanotal elevation (3/4 distance) and four distinct whitish spots on the membrane ( Figs. 1, 2 ). Metanotal elevation with raised edges and strong, straight median carina, flanked by two submedial depressions....................................................... Hebrus alvearensis sp. nov.